HP omen 870-244 heatsink fan upgrade

[flym1221]

hey guys I tried upgrading my stock heatsink fan with a Noctua af-a8 pwm hoping it would decrease cpu temps since I'm not very happy with the temps while im gaming.. The cpu on this is a i7-7700.... And yea the temps where worse than the stock one... Why is that? Is the stock heatsink fan better than the noctua?... If its not then why the negative results? if its better then what is my best option on improving my cpu temps? And yes I clean the dust often.... Please help... Answers from HP itself are welcome

[old_geekster]

@flym1221 , welcome to the forum.

From everything that I have read the stock cooler on the Intel i7's has been adequate.  What are the max temps that you are getting while gaming?  If no more than 60C to 70C, even a bit highter, you should be fine.  The Kaby Lake cores run much hotter.  You should make certain that you have enough thermal compound/paste on the processor.  If not, this will cause unnecessary high temps.  The Noctua coolers are highly rated.  This is why I am questioning the amount of thermal compound/paste.

Here's the recommended operating range for Core temperature:
80C Hot (100% Load)
75C Warm
70C Warm (Heavy Load)
60C Norm
50C Norm (Medium Load)
40C Norm
30C Cool (Idle)
25C Cool

Core temperatures up to 80C are safe.

(Compliments of Tom's Hardware!)

This is a peer to peer help forum. The only presence that HP has on it are the Admins and the Mods. Otherwise, none of us works for HP.

[REO51ST]

Welcome to the HP Support Community  @flym1221 

Did you think of a Liquid Cooling system???

Do you have the Thimphu  or  the Thimphu-K  motherboard???

Not sure if both can be liquid cooled.

The Odense 2 motherboard cannot have the Liquid Cooling system.

REO

[flym1221]

idle temps are 38c-40c  when I'm gaming its around 70-80... It gets to 80 maybe after a while... But intel did say the i7-7700 can go up to 100c .... But still I don't want it that hot... and to make it clear I only change the "fan" not the whole heatsink... But I will try to look into changing the thermal compound.. What thermal compound would you recommend??

[flym1221]

I have the thimpu k motherboard... And wow I was looking for liquid cooling that would be compatible to this case and never seen this one... Where can I get those? I think it will work 

[REO51ST]

@flym1221 

Make sure your motherboard has the "Pump Fan Connector"

REO

[flym1221]

i do have it I just need to know where can I get the watercooler with a 92mm radiator. ... The. rear exhaust fan for this is 92mm... So do you know how can I get this exact watercooler?

[REO51ST]

@flym1221 

Just to let you know I have not forgot you.

Having trouble finding the HP part number.

I know Corsair has one that works but I wanted to find the HP original.

REO

[flym1221]

Hey dont worry about it i found one on ebay but its 99 usd so thats too expensive..... what about that corsair one? can you tell me what exactly is it?... 

And also i need your opinion on this or anyone that sees this... right now ive put back the stock cooler.. and i checked the fan speed in the bios... the exhaust fan is running about 1100 rpm and the cpu fan running from 900-1000+ rpm... so im guessing since the exhaust fan has higher rpm that creates a negative pressure (base on my research is better than positive pressure) so did it create a positive pressure when i installed the noctua nf - a8  (80mm) pwm fan  (2200rpm) on the heatsink since the cpu fan will be having higher rpm than the exhaust fan?   because im assuming it is (correct me if im wrong pls) so now i bought a noctua nf - a9 (92mm) pwm fan (2000 rpm) to install it on the exhaust and hoping it would create a negative pressure then... (i know it has lower rpm but also its a bigger fan).... 

all opinions will be appreciated

[old_geekster]

@flym1221,

Here is a very good video on Positive vs. Negative air pressure in a case:

From everything that I have ever read, the CPU fan is considered an intake.  Listen to what Jay has to say Positive and Negative pressure.